2.VisuallycheckeachFRUfordamage.ReplaceanydamagedFRU.
3.Removeordisconnectallofthefollowingdevices:
a.Non-ThinkPaddevices
b.Devicesattachedtothedock
c.Printer,mouse,andotherexternaldevices
d.Batterypack
e.Harddiskdriveorsolid-statedrive
f.Externaldiskettedriveoropticaldrive
g.Memorymodule
h.Opticaldiskordisketteintheinternaldrive
4.Turnonthecomputer.
5.Determinewhethertheproblemhasbeensolved.
6.Iftheproblemdoesnotrecur,reconnecttheremoveddevicesoneatatimeuntilyoufindthefailingFRU.
7.Iftheproblemremains,replacethefollowingFRUsoneatatime(donotreplaceanondefectiveFRU):
a.Systemboard
b.LCDassembly
48HardwareMaintenanceManual
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